This is the Question and Answer about Ruby

DanielCabero/Practice1/RubyLanguage

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+
+                                     Ruby
+
+1.-Whats is ruby
+    Ruby is an open source, interpreted, object-oriented programming language created by Yukihiro Matsumoto.
+    Who chose the gemstone's name to suggest "a jewel of a language."
+
+    Ruby is designed to be simple, complete, extensible, and portable.
+
+    The Ruby programming language was created by Yukihiro Matsumoto and is named after the birthstone of one his colleagues.
+    Interestingly, the pearl (as in the Perl language) is the June gemstone, while ruby is the July gemstone.
+    This makes the subtle suggestion that Ruby is a step forward from Perl.
+
+    The syntax is very basic and it is completely object-oriented.
+    This means every type of data handled by the language is treated as an object, even data types as simple as integers.
+
+    Ruby is open source and freely available for both development and deployment.
+
+2.-Pros and cons
+
+    pros                                        cons
+        Easily used                                 Slow processing
+        Not declared variables                      MultiThreads
+        Not used ";"                                Scalability issues
+        Very easy learn                             Boot Speed
+        Flexibility                                 Consume resources
+        Not implements class
+        Large community
+
+3 According what we talked today, what are the 3 testing tiers?
+
+    The fisrt level is the implement the unit test in develop fase, it is the embrace the higher test.
+    The second level is API test for testing with the data under the application, see the atributes.
+    The third level is UI test for testing the user interface the changes the variables in the user interface.

DanielCabero/Practice1/examples.rb

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+#--*--coding :utf 8-*-
+puts "I will now count  my fruts"
+
+#I will count the banana fruit.
+Bananas = 25+30/6
+puts "Banana :#{Bananas}"
+
+# exercises 2
+# this is the error the variable no defined or initial
+# undefined local variable or method `stroberry' for main:Object (NameError) Banana :30
+#      stroberry
+# the variable is not defined
+
+#I will count apple fruit.
+Apples = 100-25*3%4
+puts "Apples :#{Apples}"
+
+puts "I will now count  my potato"
+
+#count of the potato.
+sum = 4+3+1+4-6
+puts sum
+#question about 3+2<5-7?
+puts "Is it true that 3+2<5-7"
+#assert of the result.
+puts 3+2<5-7
+#questions whats is it 3+2 and 5-7.
+puts "Whats is 3+2 It is #{3+2}"
+puts "Whats is 5-7 It is #{5-7}"
+
+

DanielCabero/Practice1/hours.rb

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+years=24*3600*365
+day=24*3600
+hour = 3600
+min=60
+
+#the variable is changes for the seconds.
+seconds= 100000000
+
+#this show the seconds in days,hours and minutes.
+puts "this in #{seconds} is equals #{seconds/years} years: #{(seconds%years)/day} days: #{(seconds%day)/hour} hours: #{(seconds%hour)/60} minites: #{seconds%min} seconds"
+
+#this method is the show the seconds in Days , hours and minutes.
+puts "this in #{seconds} in days is: #{seconds/day}"
+puts "this in #{seconds} in hours is: #{seconds/hour}"
+puts "this in #{seconds} in minutes is: #{seconds/min}"

DanielCabero/Practice1/practice.rb

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+
+string = "number is: "
+
+numbers = 2+5+3
+
+print string
+print numbers
+
+# the use the numbers  + string the message is error the main
+#  Did you mean?  String
+#     from -e:1:in `load'
+#	    from -e:1:in `<main>'
+#  the idea correct to error.
+
+arg = string numbers
+puts arg

DanielCabero/Practice2/Father.rb

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+class Father
+  #variable class amount.
+  @@amount
+  #initialize of the father class
+  def initialize(amount)
+    @@amount = amount
+  end
+
+  def amount
+    @@amount
+  end
+
+end
+
+#class child
+class Child <Father
+  #variable instance
+  @amountChild
+  #initializeof the child.
+  def initialize(amountChil)
+    @amountChild = amountChil
+  end
+
+  def childHave
+    @@amount -= @amountChild
+  end
+end
+
+
+puts "the introducing the amount the father"
+
+amount=gets.chomp.to_i
+father = Father.new(amount)
+
+puts "the introducing the amount the child"
+
+amountChilder=gets.chomp.to_i
+child = Child.new(amountChilder)
+
+puts "the introducing the amount the child2"
+
+amountChild2=gets.chomp.to_i
+child2 = Child.new(amountChild2)
+puts "the introducing the amount the child3"
+
+amountChild3=gets.chomp.to_i
+child3 = Child.new(amountChild3)
+#distribute between in the 3 childers.
+child=child.childHave
+child2 =child2.childHave
+child3 =child3.childHave
+#the show the amount of the father.
+ puts "the amount father money is #{child3}"
+
+

DanielCabero/Practice2/exercise1.rb

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+
+print"Give me a number"
+number = gets.chomp.to_i
+# the variable chop.to_i also the input integer.
+# the input other such as string the number result 0.
+bigger = number*100
+puts "A bigger number is #{bigger}"
+
+
+

DanielCabero/Practice2/exercise2.rb

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+
+
+print"Give me a number"
+
+number = gets.chomp.to_f
+#the number to input is considered such as float.
+#if input other variable that not number is considered as 0.
+bigger = number*100
+puts "The float number is #{bigger}"

DanielCabero/Practice2/exercise3.rb

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+class Exercise3
+
+  #the initialize of the Exercise3 or the circle.
+  def initialize(radius)
+    @radius = radius
+  end
+
+  #the calculate og the circle area.
+  #use the PI of the Math class.
+  def area
+    Math::PI*@radius*2
+  end
+  # the calculate of the circle perimeter.
+  def perimeter
+    Math::PI*(@radius**2)
+  end
+end
+#the input the variable radius.
+puts "Write the radius"
+radius = gets.to_i
+areaCircle = Exercise3.new(radius)
+perimeterCircle = Exercise3.new(radius)
+
+#the print of the circle area and area perimeter.
+puts "the circle area is : #{areaCircle.area}"
+puts "the circle perimeter is : #{areaCircle.perimeter}"
+
+

DanielCabero/Practice2/exercise4.rb

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+class Exercise4
+
+  #declared the age variable class.
+  @@age
+  #method initialize
+  def initialize(name, age)
+    name = name
+    @@age = age
+  end
+
+  #the method that calculate the minutes of the age.
+  def ageMinutes
+    @@age*24*60*365
+  end
+
+end
+
+puts "Introduce the name and age"
+#input the class variables.
+#use the chomp to_s for ensure the name.
+name = gets.chomp.to_s
+#use chomp to_i for the age.
+age = gets.chomp.to_i
+minutes = Exercise4.new(name,age)
+#print the variables.
+puts "the age #{age} in minutes is #{minutes.ageMinutes}"
+puts "the name is : #{name} and age : #{age}"
+
+

DanielCabero/practice/method.rb

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+
+
+
+  def test(name,costumer_id)
+    puts result= costumer_id>100? "Thanks to be our customer #{costumer_id} name #{name}": "thanks "
+  end
+
+
+
+puts test "test",55
+
+

DanielCabero/practice/ruby_blocks.rb

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+def test_block
+  puts "you are in the method"
+  yield
+  puts "you are again back to the method"
+  yield
+
+end
+
+test_block {puts "you are in the block"}
+
+value_1=10
+5.times do |value_2,value_1|
+  value_1=value_2
+  puts "value_1 inside the #{value_1}"
+end
+
+puts "value_1 outside the block:#{value_1}"

DanielCabero/practice3/car.rb

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+class Car
+
+  #defined the atributes for the gets and setters.
+  # the atributes to changes is the color and velocity.
+  attr_accessor :color, :velocity
+  # the atributes allow read are the year and modelo.
+  attr_reader :year ,:modelo
+
+  def initialize color,year,modelo
+    @color=color
+    @year= year
+    @modelo= modelo
+    @velocity =0
+  end
+  # the method for the change the velocity.
+  def spped number
+    @velocity +=number
+    puts "You accelerator to #{@velocity}"
+  end
+
+end
+car=Car.new "blanco","1999","corolla"
+# this used the get of the all atributes.
+puts "the car is #{car.color}, is #{car.year} and #{car.modelo} modelo"
+puts "With another color you would paint it"
+newColor = gets.to_s
+#this used the set for change the atribute.
+puts "the color is #{car.color =newColor}"
+car.spped 50

DanielCabero/practice3/considerations

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+
+                Practice
+
+ Lets consider you are  in a new team
+ -define which code guideline you would suggest for:
+    Format(int, float, string)
+        the variables format is for the initialize is
+        with vocal in lower case for the write easily and fast.
+        Example
+            int number,
+            String name,
+
+    Classes
+        the classes should be with correct format in the name and vocal in up case,
+        methods names clear and with comments clear and precise of the actionof the method.
+
+                class Number, class Example
+
+    Variables, Getters Setters
+        the variables should be clear
+        the getters and setters should be
+         precise and comments that objects be get or  the change of attributes
+
+                number = 25,
+                getNumber(),
+
+
+    If condition
+        the if conditional should be the minor cantidad for not miss the class coverage and
+        not miss time in implemented unit test for cover the coverage.
+
+        the sintax should be clear and precise not have two or
+        more conditions in the head of the if condition.
+
+        if(condition1)          if(condition1 condition2 condition3)
+        correct                     no correct

DanielCabero/practice3/default_parameter.rb

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+class DefaultParameter
+
+  def priceTravel name, destination= "CBBA",price = 50.20
+    puts " #{name}, #{destination}, #{price}"
+
+  end
+
+end
+
+travel = DefaultParameter.new
+puts "#{travel.priceTravel"tomas"}"
+puts "#{travel.priceTravel"tomas","Lapaz"}"
+puts "#{travel.priceTravel"tomas","sta cruz",100.50}"
+
+
+
+

DanielCabero/practice3/exercise3.rb

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+
+def test(name,costumer_id)
+  puts result= costumer_id>100? "Thanks to be our customer #{costumer_id} name #{name}": "thanks "
+end
+
+
+
+puts test "test",55